Grading-machine



(No Model.) 2 sheets-sheet 1. Y

E. HEIDLER.v GRADING MACHINE.

No. 552,249. V Patented Deo. 31, 1895.

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(No Model.) 2 Sheets-Sheet; 2. E HEIDLER GRADING MACHINE.

Patented 1390.31, 1895.

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NTTED STATES PATENT Fries.

EMANUEL HEIDLER, OF ERIE, PENNSYLVANIA.

GRADING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 552,249, dated December 31, 1895.

Application filed Aprill, 1895. Serial No. 545,724. (No model.)

T0 all whom, t may concern,.-

Be it known that I, EMANUEL HEIDLER, a citizen of the United States, residing at the city of Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Grading Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

My invention consists in the improvements in grading-machines hereinafter set forth and explained and illustrated in the accompanying drawings, in which- Figure l is a top or plan view of my improved grading-machine. Fig. 2 is a vertical sectional view of the same on the line a' rc, Figs. l and 3; Fig. 3 is a side view of the same partially in elevation and partially in section. Fig. 4 shows a section. of the machine, partially in elevation and partially in section, illustratingthe operation of the mechanism thereof.

The object of my invention is to so construct a grading-machine that one or more Scrapers or buckets may be lowered and filled, one after the other, by the passage of the machine over the ground to be graded, and after each scraper or bucket is so iilled it can be raised and the machine then moved onward and the earth so loaded into the Scrapers or buckets carried to a point where it is desirable to dump it, and the scrapers ,or buckets then successively inverted so as to dump their contents, and remain in that position until the point is reached where it is desired to again fill them, when they can be again successively lowered and loaded and raised as before.

In the construction of my invention illustrated in the accompanying drawings, A A are theforward and rear running-gears thereof, constructed substantially like ordinary wagon running-gears.

Upon the rear axle B are secured longitudinal timbers C, which timbers at their forward ends are secured to a curved frame D, which curves upward and is secured to the axle B by means of ordinary gearing D', such as is in common use on heavy wagons, so that the forward wheels A' will turn freely under the curved portion D of the frame, to which gearing an ordinary wagon tongue (not shown) is attached, for the purpose of hauling the machine..

Upon the ends of the timbers C are crosstimbers E, upon which are secured longitudinal timbers C', the front ends of which are also preferably secured to the curved frame D, the timbers C being placed in close proximity to the wheels A A', and the timbers G somewhat nearer together, so that the mechanism hereinafter described will pass down outside of the timbers C and inside of the timbers C, as hereinafter set forth, and upon the tops of the timbers C are cross-timbers E', upon which two smaller longitudinal timbers e extend centrally and longitudinally the entire length of the frame.

To the under surface of the timbers C, I secure supporting-yokes F, in which are holes ff', in one of which on each side of the machine a link F is pivoted, the two holes being provided in said yokes for the purpose of adjusting the parts of the mechanism hereinafter described.

To the lower ends ofthe links F are pivoted the front ends of curved arms G, which pass down outside the ends of a scraper or bucket H, which is open at the front side, and are pivoted to said scraper or bucket I'I by means of stud-pins h near the bottom and front edge of said scraper or bucket I-I. The arms G then curve upward and backward and are pivoted at their rear ends g to links I, which extend upward and are pivoted at their upper ends to other links I', the upper ends of which are pivoted to cranks J on the ends of a shaft J mounted in bearings on the top of the timbers C', and from the lower ends of the links F and pivoted thereto are brace-rods F2 extending upward and rearward and coupled at their upper ends to the cranks J, so as to give rigidity to the mechanism when the buckets or scrapers are being iilled. These shafts J have centrally secured thereon, between the central timbers e, a ratchet-wheel K, provided with a lever K pivoted to the timbers e, with a ratchet-dog lc thereon, by means of which the wheel K can be rotated. A stop-dog lo is also IOO pivoted to one of the frame-timbers e, adapted to engage the ratchet-wheel K and retain it in any desired position. This dog 7s is also provided with a projection k2, as and for the purpose hereinafter set forth.

To the central part of the rear of the scraper or bucket ll, near the bottom thereof, are secured ears Il', between which is pivoted the lower end of a curved link L, which is pivoted at its vupper end to the arm M of a bell-crank lever M M/ M2. The end of the arm M of this lever is pivoted in bearings on the top of the central timbers c, at some distance at the rear of the ratchet-wheel K, so that when the operating-arm M2 of said lever is raised, as illustrated in Fig. i, the arm M thereof and the link E pivoted thereto will not contact with the shaft J or the ratchet-wheel K thereon.

In the drawings, Fig. 3, I have shown the machine as made with four Scrapers or buckets and a like mechanism, as hereinbefore described, for operating1 each of them, and these scrapers or buckets are designated as Nos. l, 2, 3, and l, and the foregoing description of the said operating mechanism applies equally well to all of them, and while I have constructed the machine illustrated in the drawings with four scrapers or buckets and operating mechanisms it is obvious that as each scraper or bucket and its operatingmechanism are com plete in themselves, and operate independently of the others, I can, if desired, construct the machine with one or more scrapers or buckets and operating mechanisms, the number thereof being only limited by the length of the machine-frame between the wheels A and A.

In operation the operator, by means of the operating-levers K and M2, lowers the Scrapers or buckets II down into the position shown in Figs. c and The machine is then moved forward until the scraper or bucket l-I No. l is substantially filled, when the operator grasps the operating-levers K and M2 connected therewith and quickly raises it up into the position illustrated by the scraper or bucket II No. 2 in Fig. Ll, where it is retained bya pivoted stop m engaging the arm M of the operating-lever M2 and the stopdog la operating on the ratchet-wheel K. The scraper or bucket Il No. 2 then engages the earth and is likewise filled and raised into a like position, and successively the scrapers or buckets II Nos. 3 andr are filled and raised, and the machine with the scrapers or buck ets II thereon, so filled and raised, is then drawn to the point where it is desired to dump and discharge the earth, when operator successively grasps the operating-levers M2 and K and further raises them until the scrapers or buckets I-I are each successively brought into the position illustrated by the scraperor bucket II No. l in Fig. e, so as to dump them, after which the machine .is moved back and the Scrapers or buckets successively lowered, filled and raised as before.

Having thus fully described my invention, so as to enable others to construct and operate the same, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In a grading machine, the combination, with a supporting frame, of the links F' pivotally supported thereby, the crank-shaft mounted crosswise of the frame and provided with cranks J, a scoop or bucket, the curved arms G pivoted to the lower front part of the said scoop and to the said links, the pivoted links I I pivotally connecting the rear ends of the said arms with the said cranks, and the braces pivot-ally eonnectin the front ends of the said arms with the sai d cranks, substantially as set forth.

2. In a grading machine, the combination, with a support-in g frame, of the links F' pivotally supported thereby, the crank-shaft mounted crosswise of the frame and provided with cranks J, a scoop or bucket, the curved arms G pivoted to the lower front part of the said scoop and to the said links, the pivoted links I Ipivotallyconnecting the rear ends of the said arms with the said cranks, the braces pivotally connecting the front ends of the said arms with the said cranks, a bell-crank lever pivoted to the said frame over the central and rear portion of the said scoop, and a link L pivotally connecting the rear and lower part of the said scoop with the said bell-crank lever, substantially as set forth.

3. rlhe combination in a grading machine, of a frame supported upon wheels, links l?l coupled thereto, curved arms G coupled to said links F', a scraper or bucket pivoted upon said arms G, links I coupled to the rear ends of the arms G, links I connecting the links I with the cranks J on a shaft J mounted on said frame, and braces F2 pivoted to the lower ends of the links F and to the cranks J, a ratchet wheel K on said shaft, and lever and dog mechanism K 7i: and h for operating said ratchet wheel and shaft, a link L coupled to the rear portion of said scraper or bucket Il, a bell crank operating lever M M M3 mounted on said frame and having the arm M thereof coupled to the upper end of the link L, and stops m on the frame for engaging said bell crank lever, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

EMANUEL llElllLllR. lVitncsses:

FRED EINFELDT, ll. J. CURTZ.

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